Diamond T Truck History

Some DIAMOND T Trucks Operator & Service Manuals PDF are above this page.

In 1905, Diamond T, a company specializing in the production of trucks and buses, was founded in Chicago. However, the first 6 years of its existence, the Diamond
T brand attempted to produce luxury cars, but could not stand the competition with British brands and switched to trucks. In 1911, the first 3.5-ton truck of the company, called
Diamond T, was introduced. Under the hood of the model, a Continental-type 7-liter power unit with a capacity of 40 horsepower was located. This was followed by the 5-and 1.5-ton
models in 1912 and 1913, respectively.

However, during the First World War, due to the increased price of gasoline, Diamond T significantly reduced production, providing only the needs of the United States government.
In 1922, production was resumed on the former scale, and in 1923 a second plant was opened.

In 1928, the first three-axle truck of the brand was introduced, which made it possible to increase sales of Diamond T vehicles by more than 60%. In 1929, light-duty
pickup trucks with a loading capacity of 750 kilograms and full-size industrial 6-and 12-ton trucks were presented. Under the hood of such trucks installed power units brand
"Hercules", with a capacity of 81-98 horsepower.

During the Second World War, the company "Diamond T" produced 70% of all military trucks, significantly modernizing its production capacity. In addition, in 1944, Diamond
T was able to resume the production of civilian trucks, also presenting a universal platform, which formed the basis of the model range of special equipment - concrete mixers, tank
trucks and fire engines. Despite the long history of successful sales, in 1967 the brand ceased to exist, becoming part of the new company "Diamond Reo".